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RuntimePropertyResolver.kt
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RuntimePropertyResolver.kt
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/*
* Copyright 2023 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.gradle.internal.declarativedsl.mappingToJvm
import org.gradle.internal.declarativedsl.mappingToJvm.RuntimePropertyResolver.Resolution.Resolved
import org.gradle.internal.declarativedsl.mappingToJvm.RuntimePropertyResolver.Resolution.Unresolved
import kotlin.reflect.KClass
import kotlin.reflect.KMutableProperty
import kotlin.reflect.KVisibility
import kotlin.reflect.full.memberFunctions
import kotlin.reflect.full.memberProperties
interface RuntimePropertyResolver {
fun resolvePropertyRead(receiverClass: KClass<*>, name: String): Resolution
fun resolvePropertyWrite(receiverClass: KClass<*>, name: String): Resolution
sealed interface Resolution {
data class Resolved(val property: DeclarativeRuntimeProperty) : Resolution
data object Unresolved : Resolution
}
}
object ReflectionRuntimePropertyResolver : RuntimePropertyResolver {
override fun resolvePropertyRead(receiverClass: KClass<*>, name: String): RuntimePropertyResolver.Resolution {
val callable = receiverClass.memberProperties.find { it.name == name && it.visibility == KVisibility.PUBLIC }
?: receiverClass.memberFunctions.find { it.name == getterName(name) && it.parameters.size == 1 && it.visibility == KVisibility.PUBLIC }
return when (callable) {
null -> Unresolved
else -> Resolved(object : DeclarativeRuntimeProperty {
override fun getValue(receiver: Any): Any? = callable.call(receiver)
override fun setValue(receiver: Any, value: Any?) = throw UnsupportedOperationException()
})
}
}
override fun resolvePropertyWrite(receiverClass: KClass<*>, name: String): RuntimePropertyResolver.Resolution {
val setter = (receiverClass.memberProperties.find { it.name == name && it.visibility == KVisibility.PUBLIC } as? KMutableProperty<*>)?.setter
?: receiverClass.memberFunctions.find { it.name == setterName(name) && it.visibility == KVisibility.PUBLIC }
return when (setter) {
null -> Unresolved
else -> Resolved(object : DeclarativeRuntimeProperty {
override fun getValue(receiver: Any): Any = throw UnsupportedOperationException()
override fun setValue(receiver: Any, value: Any?) {
setter.call(receiver, value)
}
})
}
}
private
fun getterName(propertyName: String) = "get" + capitalize(propertyName)
private
fun setterName(propertyName: String) = "set" + capitalize(propertyName)
private
fun capitalize(propertyName: String) = propertyName.replaceFirstChar {
if (it.isLowerCase()) it.uppercaseChar() else it
}
}
class CompositePropertyResolver(private val resolvers: List<RuntimePropertyResolver>) : RuntimePropertyResolver {
override fun resolvePropertyRead(receiverClass: KClass<*>, name: String): RuntimePropertyResolver.Resolution {
resolvers.forEach {
val resolution = it.resolvePropertyRead(receiverClass, name)
if (resolution is Resolved)
return resolution
}
return Unresolved
}
override fun resolvePropertyWrite(receiverClass: KClass<*>, name: String): RuntimePropertyResolver.Resolution {
resolvers.forEach {
val resolution = it.resolvePropertyWrite(receiverClass, name)
if (resolution is Resolved)
return resolution
}
return Unresolved
}
}